You get home after a long day and want to cook dinner, but your electric cooker is completely dead. The display is blank, the oven light will not come on and the hob rings stay cold. It is a stressful problem, but many causes are simple and easy to check.
This guide explains how power reaches your cooker, five common reasons why it might not turn on, what you can safely check at home and when to call an engineer.
If your electric cooker has no power at all, check that the cooker switch on the wall is on, check whether the cooker has tripped at your fuse box and make sure the oven clock is set. If those checks do not help, the cause is usually a loose or burnt connection at the back, a faulty control switch or a blown thermal fuse. These need a qualified engineer.
How Does Power Reach Your Cooker?
An electric cooker uses a lot more power than a kettle or a toaster. In most UK homes, it is not plugged into a normal socket. It is connected to a dedicated circuit, with a cooker switch on the wall, often with a small neon light, and a connection back to your fuse box.
Power travels from the fuse box, through the cooker switch and a heavy-duty cable, into a terminal block at the back of the cooker. From there, it goes to the clock, the control switches and the heating elements. If the power is interrupted at any point along this route, the whole cooker can go dead.
5 Reasons Your Electric Cooker Will Not Turn On
1. A Tripped Switch in Your Fuse Box
Your fuse box has safety switches, called circuit breakers, that cut the power when too much current flows. If the cooker circuit trips, the whole cooker goes off. A power surge or a fault in a heating element can cause this.
If you find the switch has flipped down, you can switch it back up once. If it trips again straight away, do not keep resetting it. Something is faulty, and it needs an engineer. Our guide on why your oven keeps tripping the fuse explains the common causes.
2. The Cooker Switch Is Off
The cooker switch on the wall is easy to knock when you are cleaning. Check that it is switched on. If it has a neon light, the light should be on when the switch is on. If the switch is on, but there is no light and the cooker has no power, there could be a problem with the supply.
3. A Flashing Clock or an Unset Oven
On many modern cookers, the oven will not heat until the clock has been set, or until the oven is out of “auto” mode. After a power cut, the clock resets and flashes, and the oven may stay cold. The hob can still work, so you may find the rings heat up but the oven does not. Set the time, and check that the “auto” symbol is off.
4. A Burnt or Loose Connection at the Back
The heavy cable that powers your cooker connects to a terminal block at the back. Over time, the screws can loosen, and a loose connection can cause heat, sparks and burnt wiring. If the wiring burns or melts, the cooker can lose power completely. A burning smell or a buzzing noise from behind the cooker before it died is a warning sign. This is dangerous, so switch the cooker off at the wall and call an engineer.
5. A Faulty Control Switch or a Blown Thermal Fuse
Each knob on the cooker works a control switch inside, with small metal contacts that wear or bend after years of use. A worn switch can stop power reaching the oven or the rings. Cookers also have a thermal fuse, a safety device that cuts the power if the oven gets dangerously hot. When it blows, it must be replaced by a trained engineer.
Quick Checks You Can Try at Home
Start with the simple things. Check whether the rest of your home has power, in case there is a power cut or a problem with the supply. Check that the cooker switch on the wall is on. Look at your fuse box for a tripped switch, and reset it once if it is down. Set the oven clock, and make sure it is not in auto mode. Check that the child lock or control lock is not on, if your cooker has one.
If you can use the hob but not the oven, the clock or the oven’s control may be at fault. Our guide on why one ring on your electric hob is not working explains common hob faults and checks.
Safety First
Electric cookers draw a lot of current, which can cause serious injury. Never touch the cables or terminals at the back of the cooker, and never remove the back panel. Always switch the cooker off at the wall switch before you clean around it or move it. Internal wiring repairs carry a risk of electric shock and fire, so leave them to a qualified engineer.
If you smell burning, see scorch marks or hear buzzing, switch the cooker off at the wall switch, leave it off and call an engineer.
When Should You Call an Engineer?
Call an engineer if the cooker is still dead after the simple checks, the fuse box trips again after you reset it, you smell burning, you see scorch marks or melted plastic, the cooker makes a buzzing noise or you suspect a wiring or switch fault. A trained engineer will isolate the power safely, test the cable, terminal block, switches and fuses and replace anything faulty.
Frequently Asked Questions
Why does my hob work but my oven is dead?
Set the oven clock first, and make sure it is not in auto mode. If the clock is set and the oven is still dead, the oven’s control, switch or thermal fuse may be faulty.
Can a blown oven light bulb stop my cooker from turning on?
No. A blown bulb only means the oven light does not work. It does not affect the heating elements or the control panel.
How do I know if the wiring at the back has burnt?
A burning smell, scorch marks, melted plastic or a buzzing noise from behind the cooker are warning signs. Switch it off at the wall and call an engineer.
How long does it take to fix a power fault?
It depends on the cause. A simple fault can be quick, but a burnt connection or a failed control may take longer. An engineer can give an estimate after testing.
Need Help With an Electric Cooker That Will Not Turn On?
If your cooker is still dead and you need to cook hot meals again, we can help. Our trained and insured engineers cover all London boroughs and work on all major cooker brands, including Hotpoint, Beko, Bosch, Zanussi and Rangemaster, with a guarantee on parts and labour. We repair burnt connections, replace thermal fuses, fix timers and fit new control switches.
Book a visit for Electric Cooker Repair in London and get honest advice and clear pricing. Contact London Appliance Repair now.